code: def test_popmon_module_repr(test_module):
      assert (
          str(test_module)
          == "Scaler(input_key='x', output_key='scaled_x')"
      )
  
file_path: popmon/tests/popmon/base/test_module.py
imports: import numpy
  import pytest
  from popmon.base import Module
label_desc: Use image node_id 3 for calling a global function with example usage: test_popmon_module_repr(test_module) without return types